Arapahoe Basin is the vertigo inducing king. I have been disorientated to the extreme of nausea! The last time I experienced it, I had to lay on the snow with my face to the snow surface to regain my bearings. It was a very strange and scary experience. The Basin has a lot of acreage above treeline with frequent heavy snows, wind and heavy cloud cover, add these three together and its a recipe for puke inducing vertigo.
Think Snow!